I changed my billing date in early August to align all my phone numbers. As expected, the next refresh date was ~50 days out.

According to iD Mobile’s own Direct Debit FAQ - https://www.idmobile.co.uk/DirectDebit -  this should come with a pro-rated allocation of allowances:

“You could be charged for almost two months on one bill, depending on the date you choose. But don’t worry - we’ll give you all the monthly allowances you’re entitled to.”

“Will I lose any of my allowances when I change my Direct Debit date?
No. We’ll pro-rate your allowances… This means you’ll never lose out.”

Yet none of my 3 accounts have received the correct pro-rated data.

After spending time on Live Chat, I was told I’m not entitled to data for the additional 17 days — which directly contradicts iD’s own FAQs. This means customers are losing out.

I’ve raised a complaint, but I want a clear explanation from iD Mobile as to why the promised pro-rated data has not been applied.